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// 2001-05-21 Benjamin Kosnik  <bkoz@redhat.com>

// Copyright (C) 2001, 2002, 2003, 2004 Free Software Foundation, Inc.

//

// This file is part of the GNU ISO C++ Library.  This library is free

// software; you can redistribute it and/or modify it under the

// terms of the GNU General Public License as published by the

// Free Software Foundation; either version 2, or (at your option)

// any later version.

// This library is distributed in the hope that it will be useful,

// but WITHOUT ANY WARRANTY; without even the implied warranty of

// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

// GNU General Public License for more details.

// You should have received a copy of the GNU General Public License along

// with this library; see the file COPYING.  If not, write to the Free

// Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301,

// USA.

// 27.8.1.4 Overridden virtual functions

#include <sstream>

#include <testsuite_hooks.h>

class OverBuf : public std::wstringbuf

{

public:

  int_type pub_overflow(int_type c = traits_type::eof())

  { return std::wstringbuf::overflow(c); }

};

// libstdc++/9988

// filebuf::overflow writes EOF to file

void test15()

{

  using namespace std;

  bool test __attribute__((unused)) = true;

  OverBuf sb;

  sb.sputc(L'a');

  sb.pub_overflow(L'b');

  sb.pub_overflow();

  sb.sputc(L'c');

  wstringbuf sbin(sb.str(), ios_base::in);

  wstringbuf::int_type c;

  c = sbin.sbumpc();

  VERIFY( c == L'a' );

  c = sbin.sbumpc();

  VERIFY( c == L'b' );

  c = sbin.sbumpc();

  VERIFY( c == L'c' );

  c = sbin.sbumpc();

  VERIFY( c == wstringbuf::traits_type::eof() );

}

int main()

{

  test15();

  return 0;

}